then you do not have to make the child available for contact as there isn’t a Court Order in place. I appreciate it is a troublesome state of affairs for all, but when there is a court order in place, your brother should continue to make the kids accessible for contact as he seems to be doing.
His ex spouse is allowed to go to the children for two hours each different week at a contact centre and he has allowed her to visit them at Christmas time in his dwelling. You may be able to contact your Local Authority Children Services to see if they can assist with this. It may be